Gasoline cooking stove with torchless starting



oct. 1, 1929. Q HANSON I 1,729,652

GASOLINE COOKING STOVE WITH TORCHLESS STARTING HANS C. /M/vscw 5:1//zzis oWPZ/s Oct. 1, 1929. H C. HANSON 1,729,652

GASOLINE COOKING STOVE WITH TORCHLESS STARTING Filed May 1.9, 192e 2sheets-sheet 2 Inde?? im" .//ww w/ Patented Oct. 1, 1929- v.nuns c.Henson, or ALBERT Lum-MINNESOTA GAsoLrnE Voooxrne4 srovn wrm;A ToRoHLEsssmarrita Abpueationmed may 19, 1926 seriai No. 110,095.

This invention relates to a Jstove adapted to use liquid vaporizing fuelsuch as gasoline.

As is well known to those skilled in the art,

such stoves are now used in large numbers for i various cooking andheating purposes. In such stoves it is necessary to preliminarily heatthe vaporzing member into which the liquid fuel is sprayed in a linejet, before the stove can be placed in operation. This vaporlo izingmember has heretofore been heated either by a torch using some such fuelas alcohol, or by means of a priming cup carried on the stove anddisposed beneath the vapor.- izing member into which a small quantity ofgasoline was placed and ignited.

lt is an object of the present invention to provide a starting means fora stove using liquid vaporizing fuel, with the use of which the Stovecan be started by merely supplying a small dame, such as that made bythe burning of an ordinary match, thereto.

lt is a further object of the invention to provide such a stove having aburner, a fuel tank and a conduit connecting the burner ber, togetherwith a small auxiliary burner disposed beneath or in proximity to thevaporizing member, which auxiliary burner can 'oe started vby merelymomentarily applying a small llame theretosuch as the dame created byburning an ordinary match.

lt is still anotherobject of the invention to provide a stove adapted touse liquid var porizing fuel having a burner, a fuel tank9 a cluding avaporiaing member, said conduit including a portion having therein athermostatically operated valve together with a lo preliminary heatingmeans adapted to be ignited by the application of a small dame such i asthat .created by burning an ordinary match, said heating means beingdisposed adjacent said vaporizing tube and said portion of said conduit.

These and other objects and advantages of the invention .will be fullyset forth in the A following description made in connection with theaccompanying drawings, invvhich like reference characters refer to surY:

and fuel tank including a vaporizing mem# conduit connecting the burnerand tank in` parts throughout the several views and in which- V Fig. lis a plan view of a stove embodying the present invention;

Fig. 2 is a view in front elevation thereof;

Fig. 3ds a View in end elevation of a stove, some portions being brokenaway;

Fig. 4 is a vertical section taken on line 4 4 of Fig. l; and

Fig. 5 is a vertical section taken substantially online 5-5 lof Fig-1.

Referring to the drawings, a stove is shown and while the invention isapplicable to any typeA of stove using liquid vaporizing fuel, in theembodiment of 'the invention /illustrated the stove shown is of a typeadapted for use' in domestic cooking, as for a kitchen stove. The saidstove comprises va frame having legs l0 arranged at the corners of aIrectangle and formed of angular pieces of sheet metal, said legs havingother angle members ll at their lower ends having bottom plates formingthe supports for said legs. End and rear plates l2 and l2a respectivelyare secured to the corner members l0 and extend therebetweensubstantially from the 'top of said corner'membersto a short distancefrom the lower ends thereof and a top plate 13 is bolted to portions exytending inwardly from the rear plate and an angle member 14 extendingacross the tops of the front leg members l2. 'lhe top plate i3 has apair of spaced openings 13' therein having outwardly extending ledges18h at their sides disposed some distance below the top surface oftheplate 13 and adapted to support suitable grids (not shown). The endwalls l2 have plates l5 extending downwardly at an angle from theirinner sides carrying supporting means l@ forming guides for a catch pan17 which is slidable in said guides and removable at the' front of thestove between the legs l0. A channel brace 2 0. The manifold has aburner 21 at each endthereof and intermediate theburners has `a mixingchamber 19" havingan air opening in one side thereof which canbe variedin size b an adjustable gate or valve member 22. ne of the burners 21 isequipped with a regulating valve having a stem 23 extending to the frontof the stove and having a 'band wheel 24 at its end, said stem beingsupported by an angle bracket 25 securedto thechannel member 14. Themanifold 19 has a fuel receiving portion 19c having an open end intowhich fits the inner end of a vaporizing tube 26, said tube extendingthrough one end wall 12 of the frame. `The tube 26 has a valve formedtherein controlling the How of fuel to the manifold 19 which valve isformed on the end of .stem 27 having an operating hand wheel 27a at itsouter end. The tube 26 is supported at its outer end by ta couplingmember 28 having a lug secured to the outer side of the end plate 12.The

coupling member has a tube extending downwardly therefronrfro'm whichextend laterally at each side the tubes 29 and 29a respectively. Thetube 29 extends to a coupling* member 30 disposed .over and adjacent oneend of the fuel tank 31. The fuel tank31 is disposed at one end of theframewoutside of and substantially in contact with the end plate 12 andis secured to said end plate by a pair of brackets-32. Said tank is thuspermanentlyl secured to the frame and said tank is equipped with afilling plug 31a. The coupling member 30 is securedto and communicateswith the interior ofthe tank and has an outwardly j spring 34 normallyturns the wheel 33 so that said valve is held tightly in closedposition. The coupling member 30 has a pressure gauge 35 secured at oneside thereof constructed and arran edl to indicate` the air pressurewhich is paced on the fuel in the tank 31. The coupling member 3Q alsohas avalve formed therein adapted to shut off the passage of gasolinefrom the tank 31 which valve isformed on an upwardly extending stem 36and operated b v the key or wing handle 37. A tube 38 extends from theinner side of the coupling member 30 around the outer *side of the endplate 12 and rear plate 12 and is connected at its other end vto the endof the plug member 39 secured-in a tube 40 which tube 40 extends throu hthe rear end 12 and transversely of the rame substantially at rightangles to the longitudinal center line thereof. The tube 40 has a plug41 secured and has a slotted end projecting from said vlatter member anddisposed within "the cap member 44. The rod 46 has secured thereto atits other end a cup shaped sleeve 47 into which is secured a conicalvalve 48. The valve 48 (ro-operates with a conical valve seat formed intheinner end of plug 39 and from the center of which a small aperture39a leads through the member 39 and thus communicates with the tube 38.A coil compression spring 46a surrounds the stem and this engagesthe'sleeve 47 at one end and at its other end said' spring engages a nut49 threaded onto the rod 46. The coupling member 43 extends throu h theangle member 14 at the front of die frame and is secured thereto. Saidcoupling member 45 has a laterally extending nipple 45a to which issecured a tube 50 having a sleeve 51 at its other end in the ends ofwhich are secured the tubes 29a and 52 respectively. AThe tube 52extends substantially parallel to the front of the frame and is coupledat itsother end to a coupling member 53 having lugs 53a bolted totheunder side of the angle member 14. The coupling member 53 has a valvetherein adapted to cut off communication with tube 52, which valve isformed on the l valve stem 54 having at its outer end an oper- .atingwheel 55. The tube 56 extends from the inner end of the member 53 andinto a Bunsen casing 57 having a passage or mixing chamber extendingreversely from the end of the tube 56 and having an open end directedupwardly beneath said tube. The Ymember 57 is carried on a rod 58secured to a lug depending from the member 53. As shown in Figs. 1 and4, the upwardly directed opening in member 57 is disposed beneath thevaporizing tube 26 and closely adjacent the under lside of the tube 42.Casing 57 has an air inlet opening 57a.

In operation fuel will be placedin the tank 31 and placed underconsiderable air pressure. The connection of the tank with the couplingmember 30 extends to a point adjacent the bottom of the tank andgasoline is thus forced up into the coupling member 30. Vhen the stoveis entirely new and has not been previously operated, the valve wheel 33will beturned momentarily against the pressure of springl 34o open saidvalve and al# 10W some gasoline to bey forced through the tubes 29 and29a into the tube 52 and member 53. The va1ve'48 normally is closed andis always closed whenl the tubes 40 and 42 areatlow temperature. Thegasoline thus cannot pass this valve. After .the valve wheel 33 has beenopened a few seconds it is released and the valve controlled therebyagain allowed to close. The operator now takes a match and holds theburning match under the tube56. This tube is suh'iciently heated iby avery small iiame such as that produced by an ordinary burning matchbeing disposed under the same a `few seconds, so that the gasoline isvaporized and hand wheel 55 is then turned to open the valve 54 and thevayor generated in tube 56 is projected into the passage in member 57Airis drawn in through opening 57 a and a combustible mixture issuesthrough the open end of passage 57 which is directed upwardly beneaththe tube 56 and tube 26. A Bunsen flame is thus` formed and playsupwardly upon tube 56 by the same match used to heat the tube 56.

The hand wheel 27 is now operated to open the valve in tube 26 whichcontrols the How of fuel to the manifold 19.j No fuel, however,l

can flow to this manifold as such fuel'must come through the tube 28andtubes 40'and 42. This line is closed, however, by the valve 48. The handwheel 27EL therefore can be turned to open fthe valve in tube 26andleftv in this posit-ion. The llame from member 57 will heat the tube42 and said tube will expand at a considerably greater rate than thestem 46. rllhe tube thus moves plug 39 away from valve 48 and said valveis opened. Gasoline can now ow through the tube 40 and plug 39 threughthe tube 42 into the tube 52 through sleeve 5l and tube 29a upwardly`into coupling member 28 and into the Vaporizing tube 26. From thevaporizing tube it iliows into the mixing chamber 19b where it is mixedwith air passing through the'air opening in the manifold 19 and passesto the burner 2l. The flame from the member 57 is sufciently close toignite the burner 21. No combustible mixture can flow to the burner 21auntil the hand wheel 24 is operated. When this is done, the burner 2lcan be separately ignited. The burner 2l now beingignited and inzoperation, the tamethereof can be regulated as desired by manipulationof the hand wheel 27a and the hand wheel 55 can now be turned to closethe valve 54 thus extinguishing the lighting iiame at the member 57. Thestove has thus been put in operf ation and ignited merely by using anordinary match or a very small flame for a very few seconds. The stovebeing new as described the hand wheel ,33 is initially oper'- ated.After the stove has once been operated, however, there is alwayssuiicient fuel remaining in the tubes leading to the member 53 so thatit is unnecessary to operate the valve l3. All that is necessary is toopen valve 54 by turning wheel 55 and apply the match beneath the tube56. When the burners are extinguished by manipulation of the hand wheels27a and 24, theitubes 42 and 40y will ,again contract so that valve 48will again be closed. The spring 46a is provided so that in case thedevice is taken into very low temperatures and the tubes 42 and 40 wouldcontract greatly, the valve seat and valve would not be injured byexcessive pressure. IfV this should 'occur the spring 46a would yieldand .thus protect the valve and valve seat. Y

When the burners are extinguished by manipulation of the hand wheels 24and 27a, the tubes 42 and40 will contract and valve 48 will be closed-sothat the fuel line will then be closed and will not be opened untiltubes 42 and 40are again heated. It will thus be seen that should theburners be accidentally extinguished without closing the valves on valvestems 23 and 27, that the tubes 42 and 40 would soon. cool and close thefuel line by the valve 48.

'F rom the above description itis seen that applicantv has provided avery simple, eilicient and convenient 'stove for using liquid vaporizingfuel. The necessity for attention to the stove for several minutes inlighting the stove is eliminated. The valve controlling the vaporizingtube can be opened and the small burner started in a few seconds and thestove can then be left untilthe burner 21 is in operation. The operatorthen needs only to extinguish the small lighting burner. The device hasbeen amply demonstrated in actual practice and found to be verysuccess-\ ful andecient. A ,7

It will, of course, be understood that various changes may be made inthe form, details, arrangement and proportions of the parts, withoutdeparting from the scope of applicants invention, which, generallystated, consists in a device capable of carrying out the objects aboveset forth, in the novel parts and combinations of parts disclosed anddened in the appended claims.

What is claimed is l. A stove adapted to use liquid Vaporizing fuelhaving in combination, a main burn'- er, a fuel tank, a conduitconnecting the burner and tank including a vaporizing member a manually'operated control valverand aV callycause said thermostatic valve to openWlereby fuel may How to said vaporizing tu e. Y l

2. A stove adapted t use liquid Vaporizing fuel having in combination, afuel tank, a main burner, a conduit connecting said burner and fuel tankincluding a vaporizing tube, a manually operable valve in saidVaporvizing tube for shutting o and controlling the supply of fuel tosaid burner, said conduit including a'tub'e having therein a valve Whichis normally closed but adapted to be operated to supply fuel to saidburner when said last mentioned tube is heated, a small auxiliary burnerof Bunsen type having a mixing chamber disposed in close proximity toboth of said tubesand a conduit connecting saidl auxiliary burner tosaid fuel tank including a very small generating tubel which can beheated to start said auxiliary burner by a very small iame such as thatproduced by an ordinary match and a manually operated valve controllingsaid last mentioned conduit.

3. A stove adapted to use liquid vaporizing fuel having in combination,a fuel tank, a burner, a mixing chamber to which said burner isconnected, a vaporizing tube connected to said mixing chamber, a Valvein said vaporizing tube for shutting olf and controlling the supply offuel to said mixing chamber, a conduit connecting said vaporizing tubeto said fuel tank, a valve in said conduit normally closed but adaptedto be opened when said conduity is heated, a small auxiliary Bunsenburner disposed beneath said vaporizing tube and between `said burnerand mixing chamber in proximity to said conduit, a conduit connectingsaid auxiliary burner to said fuel tank including a very smallgenerating tube which can be heated to start said auxiliary burner by aVery small flame such as that produced by an ordinary match.

In testimony whereof l aix my signature.

' HANS C. HANSON.

